SystemExplorer VS Windows Task Manager

After you launch the game open the Task manager and right click MW5.exe and set the priority to high. It will only be set this way until you close the game, so you have to do it every time you open it. The easiest way is to use an app like System Explorer that will do it for you when you open the game. There is another way to do it with reg edits but I don't know how to do that. Source: 10 months ago

To make it permanent, you may use free software System Explorer which allow you to save these settings. Https://systemexplorer.net/. Source: about 2 years ago

Download System Explorer from: http://systemexplorer.net/. When you install it make sure you uncheck "run at startup". Source: almost 3 years ago

Even easier: just use this http://systemexplorer.net/. Source: almost 3 years ago

System Explorer - An enhanced task manager with support for monitoring and modifying system processes, start-up programs, system services, drivers, shell extensions, and more. - Source: dev.to / almost 3 years ago

If you have migrated your Mojang/Minecraft account to a Microsoft account and need assistance, please contact Microsoft Support. Source: 5 months ago

The error also gave a link to a form if I have problems. I filled the form out and send it. I got an answer back a few seconds later that mojang doesn't do the support anymore and I should go to https://support.microsoft.com/en-us. Source: 6 months ago

End powershell.exe and go the startup tab of task manager and see if it starts up there if it keeps happening call Microsoft support. https://support.microsoft.com/en-us. Source: 10 months ago

You can find more details on their support site here; https://support.microsoft.com/en-us. Source: 10 months ago

Go to https://support.microsoft.com/en-us for more support. Source: 11 months ago